Window ventilator



Apk-iR 36H1, 935. A. F. PE1-Ris 3,999,421

WINDOW VENTILATOR Filed March 11, 1933 2 Sheets-Sheet l Amm 3m wm. A. F. #Ems Hmmm wINDow VENTILATOR Filed March 1l, 1933 2 Sheets-Sheet 2 'lfjj 50 A Y 1416 1: I 0,1. 2.5 O, 1.5 I O/ l I7 l o n o o o O o 18 2 l! HW' im Patented Apr. 30, 1935 UNiFi'E STATES WINDOW VENTILATOR Anthony F. Petris, South Chicago, Ill.

Application March 11, 1933, Serial No. 660,339

Claims.

This invention relates to window ventilators which comprise deiiecting means adapted to delect air entering through an open window.

Among the objects of the invention are to pro r5 vide a window ventilator of this type which is adapted to fold up when the window is closed and extend when the window is opened so as to occupy the opening, to provide such a ventilator which is easy and inexpensive to construct and which is compact and serviceable in use, to provide a housing for concealing and protecting the ventilator when the window is closed, to provide means whereby the ventilator may be readily detached so as to permit more complete movement of the sash to which it is attached, and to provide a ventilator which is extensible and contractable so that it may be adapted to be mounted on Windows of different widths.

Other objects, advantages and capabilities of the invention will readily be understood by the following description oa preferred embodiment thereof taken in conjunction with the accompanying drawings, in which:

Figure l is a fragmentary elevational view showing the lower part of a double hung sash window provided with the ventilator embodying my invention, part of the housing being broken away;

Fig. 2 is a sectional view on a larger scale taken on the line 2 2 of Fig. l;

Fig. 3 is a sectional view similar to Fig. 2 showing the window shut and the ventilator folded;

Fig. 4 is a front sectional detail View corresponding to Fig. 3, the housing being cut away to show the folded ventilator;

Fig. 5 is a'fragmentary sectional view showing a further embodiment of the invention in which the ventilator is adapted to be housed in a transverse recess in the lower cross bar of the window sash;

Fig. 6 is a sectional detail on an enlarged scale taken on the line 6 6 of Fig. 2;

Fig. 'l is a longitudinal section of a deector element employed in the ventilator;

Fig. 8 is a transverse sectional view therethrough taken on the line 8 3 of Fig. 7; and

Fig. 9 is a sectional view of one end o1 the'deflector element taken on the line 9 5 of Fig. 2, showing the manner in which it is pivotally secured to a link element.

Referring to the drawings, the reference numeral I@ designates the lower sash of a double hung sash window slidably mounted in its frame.

The bottom cross bar is designated by the reference numeral il, and the window sill by the reference numeral l2.

The ventilator comprises a plurality of deectors i3, six of these being shown in the embodiments of the invention illustrated. The deiiec- 5 tors are preferably in the form ci inverted pans and are preferably pressed from sheet metal. Each deector element comprises a principal web lli, longitudinal Ilanges l5, and end flanges t6, Upon each end flange it are mounted three 10 pivots il. The center pivot il provides a pivotal bearing for the center point of a link iii, which link l! is pivotally mounted at each end on the end pins il of the next above and next below delector element, so that the end flanges l@ oi 15V the deiiector elements i3 and the links i3 are pivotally connected together so as to provide a lazy tongs linkage at each end or" the ventilator. rlhe principal webs it oi the deilector elements i3 slope inwardly and upwardly with respect to 20 the window. The innermost end of the lowermost link I8 is pivotally mounted on a bracket I9 which is rigidly mounted on the sill l2, for example by means of screws. The innermost pivot of the top deiiector i3 is connected to a i bracket 2B which has a horizontal flange 2i through which freely extends a bolt 22, mounted vertically upon the lower cross bar il. The bolt 22 extends through openings in cut-turned ends of a bracket 23 suitably formed from a strip of metal. In the embodiment of the invention illustrated in Figs. l to 4, the brackets 23 are mounted on the outer face of the lower cross bar l l of the window sash Iii and the brackets i9 are mounted on the sill l2 in substantial alignment with the bolts 22.

In Fig. 2 the window is shown opened, Athe deectors I3 are in a condition or considerable Obliquity so that air passages are provided between adjacent derlectors to permit air to enter in the manner indicated by the arrows. Owing to the inward and upward slope of the deiiectors, the incoming air is directed upwardly so as to prevent discomfort due to direct drafts striking the occupants of the room. When the sash itl is lowered the lazy tong linkage constituted by the end member I6 and the links SS collapses untii the relative position shown in Fig. 3 is attained. During the iirst part of the closing movement said linkages collapse and the horizontal o 2l oi the bracket 2t is still at the lower end of the bolt 272. Continue-" i closing movement causes the bolt E2 to pass downwardly through the opening in the iiange 2i until the window is completely closed and the ange 2l has moved toward the 55 upper end of the bolt 22. In this embodiment of the invention a housing 25 is provided which completely covers the ventilator in its folded condition as shown in Fig. 3. This housing is rigidly mounted on the lower cross bar Il, being preferably secured thereto by means of screws 25. These screws preferably pass through openings in an inturned flange 2S provided along the inner edge at the top of the housing. In order to provide for the attachment of these screws I provide partially cut out tabs t' in alignment therewith so that they may be opened up for the insertion of a screwdriver and subsequently returned to their initial position. Being thus attached to the lower cross bar the housing 2t moves therewith and provides no obstruction to the outlook of the occupant or to ventilation, the window being opened.

l'n the embodiment of the invention illustrated in Fig. the housing is omitted and the lower cross bar i l of the sash l@ is provided with a large transverse recsss 23 in which the ventilator is located when the window is closed. The elements of the ventilator as shown in this figure are eX- actly the same as shown in Figs. l to 4 inclusive, and similar reference numerals are employed. The bracket may be secured to the rear wall of the recess 28 in any suitable way, for example by means oi bolts 2S and nuts Sil, the latter being located within holes bored in the rear face of the cross bar li.

In order to enable the ventilator to be disconnected so as to permit sash it to be ope-neL to a greater extent, for example to facilitate window cleaning, prefer to provide removable pivot members Si to connect the lowermost links E8 to the brackets i9. As shown in Fig. 6 this may be conveniently done by means of a pin or pivot member 3i which is adapted to extend through aligned openings in said link it and bracket l. The pin 3i carries rigidly a flange or collar 32 which is adapted to bear against the link E8. The collar 32 and the portion of the pin therebeyond extends through a housing 33 rigidly mounted on said link l S. The housing 33 includes a spring 343 which bears against the outer end of the housing and against the collar S2 so as to force the pin 3l into the aligned openings of the links i8 and brackets i9. The other end of the pin 3l projects out of the housing 33 and is pro vided with a knob 35 whereby the pin may be moved against the action of the spring 3A so as to separate the lower links I8 from the brackets l@ when desired. It will be noted that the lower deiiector I3 lies in front of the pins 3l so that it is diicult or impossible to disengage the ventilator from the brackets i9 from the outside. The ventilator consequently provides security against burglary and theft even in the embodiments where this easily operated disconnecting means is applied.

It is preferred to make the ventilator extensible and contractible so that it may readily be adjusted to t windows of considerably diierent widths. For this purpose the transverse elements which extend across the window opening, that is the deiiectors i3 and the housing 2, where such is employed, are all made or" two parts in telescopic relation. Thus referring to Fig. 7 it will readily be seen that the delector i3 comprises a larger left hand portion 36, the side anges l5 of which are turned inwardly to provide guides 3l, best shown in Fig. 8. The right hand portion 3S of the def-lector i3 has anges l5 adapted to permit the portion 38 to slide into the portion 36 with its side flanges I5 abutting against the guides 31. The housing 24 also comprises two telescoped portions, the larger portion beingV provided along its bottom front edge with a guide S9 adapted to serve as an abutment for the bottom edge of the front wall of the other housing. The larger housing element is also provided at the bottom of the flange 25 with an inturned guide 4S which is adapted to serve as an abutment for the flange 2t of the other housing element. It will be readily understood that this construction of the deflector elements i3 and the housing 24 enables the effective length of the ventilator to be adjusted within wide limits by merely pulling the two ends apart or forcing them together.

Although the invention has been described in connection with the specic details of preferred embodiments thereof, it must be understood that such details are not intended t'o be limitative of the invention except insofar as set forth in the accompanying claims.

Having thus described `my invention I declare that what claim is:

l. A window ventilator comprising a lazy tongs linkage, denectors carried by said linkage, means adapted pivotally to connect the lower end of said linkage to a window sill, and means mounted on the window sash having a limited free slidable connection, in direction of movement of the sash, with the other end of said linkage, whereby the sash moves for a predetermined distance from closed position before the linkage moves.

2. A window ventilator comprising an expansible linkage, means adapted to secure the linkage to a window sill, a vertical bar on the window sash on which the upper end of the linkage is slidably mounted, and a housing secured to the window sash adapted to enclose said bar and to enclose the linkage in its collapsed position when the window is shut.

3. A window ventilator comprising a series of deflectors having downturned flanges at each end, link elements pivotally connected to the flanges so as to constitute therewith lazy tong linkages at each side of the Ventilator, means pivotally connecting the lower end of said linkages to a. window sill, bars carried by said sash adjacent the upper ends of said linkages, and means carried by the upper ends of said linkages having a slidable connection with said bars.

4. In combination, a window having a sliding sash adapted to be moved to open position, an expansible ventilator comprising a series of deectors connected to the window sill, the lower cross bar of said sash being provided with a longitudinal recess open at the bottom, and bars mounted on the cross bar within said recess, upon which bars the upper end of the ventilator is slidably mounted said recess being adapted to enclose the ventilator in its collapsed condition when the window is closed.

5. A window ventilator comprising an expansible linkage, means securing one end of the linkage to a stationary window element, connecting means at the other end of the linkage, and means on a movable sash of the window having a limited free sliding connection with saidconnecting eans, whereby the linkage is secured to the sash so that a limited free relative movement is permitted between the sash and the adjacent end of the linkage in the direction of the movement of the sash.

ANTHONY F'. PIEl'IRlZS.v 

